Any planet with people who use calendars would need to invent leap years.
Leap years are any years evenly divisible by four, with two exceptions. So years like 2004 and 2008 are leap years.The two exceptions:Any "century" year evenly divisible by 100 is NOT a leap year, so 1900 was not a leap year and 2100 will not be a leap year, except:Any year number divisible by 400 IS a leap year, so 2000 was and 2400 will be leap years.Of the 1000 years between 2001 and 3000, there are 250 "divisible by 4" years, minus 10 "century" years plus 2 "divisible by 400" years (2400 and 2800) gives 242 leap years between 2001 and 3000. Add 2000, and there are 243 leap years between 2000 and 3000, inclusive.
The only place astronauts have been other than Earth, is on the Moon. Between 1969 and 1972 there were 6 moon landings. Nobody has gone to the Moon since then and nobody has gone to any other planets yet. Most astronauts now just orbit the Earth on one of the Space Shuttles or on the International Space Station or one of the other spacecraft that some countries have. It will be a long time before it will be possible to send astronauts to other planets.
If by "like Earth" you mean habitable (that we could live on, without spacesuits, domes or other technological adaptations): there aren't any in our solar system, and none yet elsewhere that we know of. But scientists keep searching; the universe is a pretty big place, and odds are there are multiple other Earthlike planets out there somewhere.
No, 1933 was not the shortest year. All calendar years have the same length of 365 days, or 366 days in a leap year. However, the perception of it being "short" might stem from significant historical events that occurred that year, such as the rise of Adolf Hitler in Germany and the end of Prohibition in the United States. But in terms of actual duration, it was like any other year.
It is waste from the Earth and other surrounding planets, these are known as meteorites these can contact the Earth's surface any time. So they are quite destructive and deadly when they hit Earth, it messes up the food web
The odds are 91% that any given 12-year period will include three leap years. The other 9% of the time there are two leap years in a 12-year period. There are never four leap years in a 12-year period.
Leap years that begin on a Monday or a Tuesday have 53 Tuesdays. Leap years that begin on any other day of the week have 52 Tuesdays. 72.165% of all leap years have 52 Tuesdays.
the sun is bigger than any other planets because millions of years ago meteorites smashed together to make the sun and to any other planets that did not happen
Usually any year divisible by 4 is a leap year, with the exception that centenary years are not leap years unless divisible by 400.
Yes.
2920 excluding any leap years
no you may have to change the batteries
Yea, because if we don't are calendar would never exist and if it didn't exist we would no what day it was. So thanks to a leap year we have all of that!
The Earth moves the same in a leap year as it does in any other year. We have leap years because Earth takes about 365.25 days to go around the sun, not 365 days, so a leap year makes up for that in order to keep our calendars correct.
A leap year is every 4 years and so 800/4 = 200... unless it includes a year that is exactly divisible by 100. In that case, an additional rule has to be applied. If a year is exactly divisible by 100 but not exactly divisible by 400, then it is NOT a leap year. If it is exactly divisible by 400 then it IS a leap year. 1700, 1800, and 1900 were NOT leap years. 2100, 2200, and 2300 will NOT be leap years. 1600, and 2000 were leap years. 2400 will be a leap year.... so if the 800 year span happens to include a year exactly divisible by 100 but not exactly divisible by 400 then there would only be 199 leap years.
2650838400000 milliseconds approx. The exact value depends on how many leap years there were in the interval and on whether or not there were any leap seconds.
1577880000000 milliseconds approx. The exact value depends on how many leap years there were in the interval and on whether or not there were any leap seconds.